Hoot, holler, roll your eyes back and writhe all you want, but a new study by the University of Waterloo says there’s no point in faking it. Partners generally know whether they’ve sexually satisfied one another after the act.

According to university researchers, couples are adept at developing a “sexual script” and routines within their sexual habits that communicate to one another whether or not they were fully satisfied by a shared sexual experience. The study involved 84 couples, who were asked to report on various factors in their relationship in addition to how they felt post-coitus. Researchers found men and women both equally able to accurately access their partner’s level of sexual satisfaction based on cues within the sexual script when compared to the answers they gave researchers.

Like good relationships a good sexual experience with your partner is undoubtably built upon communication. If you’re engaged with your partner you can tell when that connection is broken or when your partner isn’t “entirely there” during a moment of intimacy. Whether we know it or not, we all have certain cues we give our partners (in and out of the bedroom) that speak as loud as words. Isn’t half the challenge (or fun) of a relationship getting to learn those cues?

I guess Sally was wrong when she said women were capable of fooling any man into thinking… well, you know.